The atmospheric layer containing most of the mass of Earth's air is the

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Quizplus · Accepted Answer

The troposphere contains approximately 75% of the total mass of Earth's atmosphere, and it is the layer closest to Earth's surface. It is where most of our weather occurs and where we live and breathe. The other layers listed, such as the thermosphere, mesosphere, stratosphere, and tropopause, are all higher up in the atmosphere and contain much less mass.

The Atmospheric Layer Containing Most of the Mass of Earth's